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Unit 1 - Lesson 20 - Grade 3: Illustrative Mathematics

Last updated about 1 year ago

15 questions

Note from the author:

Instructions

Lesson: The Commutative Property

Cool Down: Multiplication Reflection

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Grade 3 Unit 1
Lesson 20: The Commutative Property
CC BY 2021 Illustrative Mathematics®

Grade 3 Unit 1
Lesson 20: The Commutative Property
CC BY 2021 Illustrative Mathematics®

Number Talk: Subtraction (Warm Up)

Find the value of each expression mentally.

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Learn More About Multiplication

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Revisit Arrays

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Question 15

15.

Summarize what you learned about multiplication today.

Question 1

1.

70 - 10

Question 2

2.

68 - 10

Question 3

3.

70 - 12

Question 4

4.

68 - 12

Question 5

5.

What do you notice?

Question 6

6.

What do you wonder?

Question 7

7.

How are the situations the same?

Question 8

8.

How are the situations the different?

Question 9

9.

Write an equation for Image A.

Question 10

10.

Write an equation for Image B.

Question 11

11.

How does your equation connect to the situation and array for Image A?

Question 12

12.

How does your equation connect to the situation and array for Image B?

Question 13

13.

Write 2 multiplication equations that represent the array.

Question 14

14.

Explain why both equations can represent the array.